Influence of polyacrylic acid and poly-4-vinylpyridine hydrogels mutual activation in intergel system on their sorption properties in relation to lanthanum (III) ions

Jumadilov, Т. K.; Kondaurov, R. G.; Abilov, Zharylkasyn A.; Gražulevičius, J.V.; Akimov, A. A.

doi:10.1007/s00289-017-1985-3

Cited by 13 publications

(13 citation statements)

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“…The remote interaction phenomenon [ 29 , 30 , 31 , 32 ] provides a transition of initial macromolecular structures (in the work, ion-exchange resins Amberlite IR120 and AB-17-8) into highly ionized state due to their mutual activation. Activation is a transfer of functional groups from less reactive state to more reactive state and appearance of high ionization and relaxation areas of initial ion exchangers in interpolymer pairs.…”

Section: Resultsmentioning

confidence: 99%

Effective Sorption of Europium Ions by Interpolymer System Based on Industrial Ion-Exchanger Resins Amberlite IR120 and AB-17-8

Jumadilov¹,

Khimersen

Malimbayeva

et al. 2021

Materials

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The research is aimed at checking the impact of a remote interaction phenomenon on growth of sorption properties of ion-exchange resins during sorption of europium ions. Industrial ion exchangers Amberlite IR120 and AB-17-8 were selected as objects for the study. Investigation was undertaken using the following physico-chemical methods of analysis: conductometry, pH-metry, colorimetry, Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and atomic emission spectroscopy. Remote interaction of the initial ion exchangers in the interpolymer system leads to their transition into highly ionized state due to formation of optimal conformation. Found that high ionization areas of Amberlite IR120 and AB-17-8 are the molar ratios Amberlite IR120:AB-17-8 = 4:2 and 1:5. The remote interaction effect provides significant increase of the following sorption properties: sorption degree, polymer chain binding degree, effective dynamic exchange capacity. A strong increase of the sorption properties (average increase for all time of remote interaction is over 50%) in the interpolymer system Amberlite IR120-AB-17-8 was observed with individual polymer structures of Amberlite IR120 and AB-17-8. The remote interaction phenomenon can be successfully used for effective modification of industrial ion exchangers for sorption of rare-earth metals.

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Section: Resultsmentioning

confidence: 99%

Effective Sorption of Europium Ions by Interpolymer System Based on Industrial Ion-Exchanger Resins Amberlite IR120 and AB-17-8

Jumadilov¹,

Khimersen

Malimbayeva

et al. 2021

Materials

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“…In this case, the highest sorption occurs at the ratios of 67 %hPAA -33 % hP4VP and 33 % hPAA -67 % hP4VP, 67.1 and 56.7 % of lanthanum are recovered, respectively. The largest amount (97.6 %) of lanthanum is recovered at a ratio of 50 % hPAA -50 % hP4VP at 24 h [10][11][12][13].…”

Section: Discussionmentioning

confidence: 99%

Features of the extraction of yttrium and lanthanum with an intergel systembased on hydrogels of polyacrylic acid and poly-4-vinylpyridine

Totkhuskyzy¹,

Yskak²,

Saparbekova³

et al. 2020

Bull. of the Kar. Univ. "Chem". Ser.

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Features of the extraction of yttrium and lanthanum with an intergel system based on hydrogels of polyacrylic acid and poly-4-vinylpyridine To predict the sorption activity and selectivity of hydrogels, the effect of mutual activation of polymer networks in the intergel system was studied. The intergel system of the hydrogel of polyacrylic acid ((hPAA)) and the hydrogel of poly-4-vinylpyridine (hP4VP), which was studied at a distance through the volume of the solvent in the absence of direct contact between the polymer networks, were chosen as the object of study. Intergel systems have been investigated using methods for measuring electrical conductivity, pH, and gravimetry. The mutual activation of La 3+ and Y 3+ ions with the intergel system in an aqueous medium was also studied. It has been established that as a result of the remote interaction of the studied hydrogels, their mutual activation occurs, leading to a significant change in their electrochemical and conformational properties. At certain ratios of acidic and basic hydrogels, a significant increase in the sorption of lanthanum and yttrium ions is observed in comparison with the initial hydrogels. These results indicate the appearance of ionized structures with optimal conformation, providing an optimal ligand environment around lanthanum and yttrium ions.

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“…For this reason, this paper investigates the use of KU-2-8 and AV-17-8 ion exchangers for cerium ions sorption from aqueous solutions. Based on our previous research [21] related to intergel systems, we decided to choose KU-2-8 and AV-17-8 ion exchangers for this study due to their availability and low cost. The combination of ion exchangers into an interpolymer system "KU-2-8-AV-17-8" with different molar ratios can be applied to investigate the remote interaction effect [22] on improving the process of cerium ions sorption.…”

Section: Introductionmentioning

confidence: 99%

Ion Exchange Dynamics in Cerium Nitrate Solution Regulated by Remotely Activated Industrial Ion Exchangers

et al. 2021

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Many technological solutions contain valuable components as waste and can become an additional source of rare-earth elements to meet the needs of modern production. The development of technologies based on commercially available and cheap sorbents reveals the possibility for rare earth recovery from various solutions. This paper provides research on using a combination of KU-2-8 and AV-17-8 ion exchangers in different molar ratios for cerium ions sorption from its nitrate solution. The mutual activation of the ion exchangers in an aqueous medium provides their transformation into a highly ionized state by the conformational and electrochemical changes in properties during their remote interaction. The ion exchange dynamics of solutions were studied by the methods of electrical conductivity, pH measurements, and atomic emission analysis of the solutions. The research showed that the maximum activation of polymers was revealed within the molar ratio of KU-2-8:AV-17-8 equal to 3:3. In more detail, in comparison to AV-17-8, this interpolymer system showed an increase in the sorption degree by more than 1.5 times after 6 h of interaction. Moreover, compared with KU-2-8, the same interpolymer system showed an increase in the degree of cerium ions sorption by seven times after 24 h of interaction. As a result, the total cerium ions sorption degree after 48 h of sorption by individual KU-2-8 and AV-17-8 was 38% and 44%, respectively, whereas the cerium ions sorption degree by the same interpolymer system in the molar ratio 3:3 became 51%. An increase in the sorption degree of cerium ions by the interpolymer system in comparison with individual ion exchangers can be explained by the achievement of a high ionization degree of ion exchangers being activated in the interpolymer system by the remote interaction effect.

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Influence of polyacrylic acid and poly-4-vinylpyridine hydrogels mutual activation in intergel system on their sorption properties in relation to lanthanum (III) ions

Cited by 13 publications

References 4 publications

Effective Sorption of Europium Ions by Interpolymer System Based on Industrial Ion-Exchanger Resins Amberlite IR120 and AB-17-8

Effective Sorption of Europium Ions by Interpolymer System Based on Industrial Ion-Exchanger Resins Amberlite IR120 and AB-17-8

Features of the extraction of yttrium and lanthanum with an intergel systembased on hydrogels of polyacrylic acid and poly-4-vinylpyridine

Ion Exchange Dynamics in Cerium Nitrate Solution Regulated by Remotely Activated Industrial Ion Exchangers

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